Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['I', '1897', 'q', 'j', '8009', '9011', '4175']

9, 1897, 17, 10, 8009, 9011, 4175